Alain Alcouffe wrote:
> Well, Mason's message surprised me :
> First, was obsolescence a very popular term among economists around
> 1900? It does not appear in Marshall's Principles index.
> Second, obsolescence is only a small part of what Schumpeter intended to
> describe with "creative destruction" as far as I understand it (an
> explosive, exponential and cumulative process with far fetched effects
> ignated by some initially localized innovation).
The expression was moral depreciation.
Michael Perelman